2215163131 has 2 divisors, whose sum is σ = 2215163132. Its totient is φ = 2215163130.

The previous prime is 2215163107. The next prime is 2215163149. The reversal of 2215163131 is 1313615122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2215163131 - 2¹³ = 2215154939 is a prime.

It is a super-2 number, since 2×2215163131² = 9813895393883446322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2215163096 and 2215163105.

It is not a weakly prime, because it can be changed into another prime (2215163191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107581565 + 1107581566.

It is an arithmetic number, because the mean of its divisors is an integer number (1107581566).

Almost surely, 2^2215163131 is an apocalyptic number.

2215163131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215163131 is an equidigital number, since it uses as much as digits as its factorization.

2215163131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 2215163131 is about 47065.5195551903. The cubic root of 2215163131 is about 1303.5726443055.

Adding to 2215163131 its reverse (1313615122), we get a palindrome (3528778253).

The spelling of 2215163131 in words is "two billion, two hundred fifteen million, one hundred sixty-three thousand, one hundred thirty-one".